Place a tile: drag from sidebar, or click sidebar tile then click canvas.
Move a tile: drag it. Drop on sidebar to remove it.
Delete a tile: right-click it.
Rotate: Q (left) / E (right) / scroll wheel — while hovering or dragging.
Flip: W Cancel: Escape or right-click.
Pan canvas: drag empty area, middle-button drag, Shift+drag, or arrow keys.
Shift grid: Alt+drag (or "Shift grid" button).
Zoom: scroll wheel, +/− keys, or +/− buttons (bottom-right).
Undo/Redo: buttons, or Ctrl+Z / Ctrl+Y.
Tiling and settings are saved automatically.